Citizens in an urban area where asked whether or not they favored a particular bond issue.  The following contigency table was obtained.     Approve Disapprove Neither Aprove nor Disapprove Live in the city 70 100 20 Live in the suburbs 80 90 30   What test is appropriate?  (Choose 1, 2, or 3)  1) t-test   2) chi-square test of independence  3)  chi-square test of goodness of fit  4) z-test of proportion   How many degrees of freedom are there?   What is the expected value, , to two decimal places?   If we are performing a classical test of hypothesis with  what ist the critical value (from the appropriate table in the table folder within content)?   Still performing a classical test of hypothesis, if the test statistic is 2.94 do we 1) reject the null hypothesis  2) fail to reject the null hypothesis

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